/**
 * Copyright © 2015-2018 ODM All rights reserved.
 */
package com.thinkgem.jeesite.common.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import org.apache.commons.lang3.StringUtils;

/**
 * 对象操作工具类, 继承org.apache.commons.lang3.ObjectUtils类
 * @author ThinkGem
 * @version 2014-6-29
 */
public class ObjectUtils extends org.apache.commons.lang3.ObjectUtils {

	/**
	 * 注解到对象复制，只复制能匹配上的方法。
	 * @param annotation
	 * @param object
	 */
	public static void annotationToObject(Object annotation, Object object){
		if (annotation != null){
			Class<?> annotationClass = annotation.getClass();
			Class<?> objectClass = object.getClass();
			for (Method m : objectClass.getMethods()){
				if (StringUtils.startsWith(m.getName(), "set")){
					try {
						String s = StringUtils.uncapitalize(StringUtils.substring(m.getName(), 3));
						Object obj = annotationClass.getMethod(s).invoke(annotation);
						if (obj != null && !"".equals(obj.toString())){
							if (object == null){
								object = objectClass.newInstance();
							}
							m.invoke(object, obj);
						}
					} catch (Exception e) {
						// 忽略所有设置失败方法
					}
				}
			}
		}
	}
	
	/***
	* @Title: copyPropertiesExclude 
	* @Description: 复制对象属性 
	* @param @param from
	* @param @param to
	* @param @param excludsArray 排除属性列表
	* @param @throws Exception    设定文件 
	* @return void    返回类型 
	* @throws
	 */
	 public static void copyPropertiesExclude(Object from, Object to, String[] excludsArray) throws Exception {
        List<String> excludesList = null;
        if (excludsArray != null && excludsArray.length > 0) {
            excludesList = Arrays.asList(excludsArray); // 构造列表对象
        }
        Method[] fromMethods = from.getClass().getDeclaredMethods();
        Method[] toMethods = to.getClass().getDeclaredMethods();
        Method fromMethod = null, toMethod = null;
        String fromMethodName = null, toMethodName = null;
        for (int i = 0; i < fromMethods.length; i++) {
            fromMethod = fromMethods[i];
            fromMethodName = fromMethod.getName();
            if (!fromMethodName.contains("get"))
                continue;
            // 排除列表检测
            if (excludesList != null && excludesList.contains(fromMethodName.substring(3).toLowerCase())) {
                continue;
            }
            toMethodName = "set" + fromMethodName.substring(3);
            toMethod = findMethodByName(toMethods, toMethodName);
            if (toMethod == null)
                continue;
            Object value = fromMethod.invoke(from, new Object[0]);
            if (value == null)
                continue;
            // 集合类判空处理
            if (value instanceof Collection) {
                Collection<?> newValue = (Collection<?>) value;
                if (newValue.size() <= 0)
                    continue;
            }
            toMethod.invoke(to, new Object[] { value });
        }
    }
	 
	 /**
     * 从方法数组中获取指定名称的方法
     * 
     * @param methods
     * @param name
     * @return
     */
    public static Method findMethodByName(Method[] methods, String name) {
        for (int j = 0; j < methods.length; j++) {
            if (methods[j].getName().equals(name)) {
                return methods[j];
            }
        }
        return null;
    }
	
	/**
	 * 序列化对象
	 * @param object
	 * @return
	 */
	public static byte[] serialize(Object object) {
		ObjectOutputStream oos = null;
		ByteArrayOutputStream baos = null;
		try {
			if (object != null){
				baos = new ByteArrayOutputStream();
				oos = new ObjectOutputStream(baos);
				oos.writeObject(object);
				return baos.toByteArray();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 反序列化对象
	 * @param bytes
	 * @return
	 */
	public static Object unserialize(byte[] bytes) {
		ByteArrayInputStream bais = null;
		try {
			if (bytes != null && bytes.length > 0){
				bais = new ByteArrayInputStream(bytes);
				ObjectInputStream ois = new ObjectInputStream(bais);
				return ois.readObject();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}